On Sat, Jan 30, 2021 at 2:20 PM Nigel Johnson via cctalk
<cctalk at classiccmp.org> wrote:
Yes the BA11S would be too big. Can't see why not for the 11/03 chassis.
I used to make a good living upgrading 1/03 chasses with four extra bits
for the 11/23/73 (Hmm, where is my old stock of W933 bus strip!)
Always works except in the MINC laboratory system, which used those four
pins for module identification.
Since all the memory is on-board with the 11/93 I don't think it would
make a difference unless DMA used, and I don't plan to go that far! I
could always wire-wrap them.
The KDJ11-E 11/93 has PMI signals on the CD connectors, so you need a
Q/CD backplane, such as the 18-bit 4x9 H9273, the 22-bit 4x9 H9276, or
the 22-bit 4x8 H9278 (BA23 backplane).
The 4x4 H9270 is a Q/Q backplane, so that would cause a conflict with
the PMI signals on the CD connectors of the KDJ11-E 11/93.